chore(deps): update dependency cross-spawn to v6.0.4 (#552)

Author: renovate[bot]

packages/graphql-playground-react/package.json

@@ -57,7 +57,7 @@
     "case-sensitive-paths-webpack-plugin": "2.1.1",
     "chalk": "2.3.0",
     "connect-history-api-fallback": "1.5.0",
-    "cross-spawn": "6.0.3",
+    "cross-spawn": "6.0.4",
     "css-loader": "0.28.9",
     "detect-port": "1.2.2",
     "dotenv": "5.0.0",

packages/graphql-playground-react/yarn.lock

@@ -2004,9 +2004,9 @@ [email protected], cross-spawn@^5.0.1:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
-[email protected].3:
-  version "6.0.3"
-  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.3.tgz#7cbe31768ba0f1cc37acc925bf09e7a9a4a9b0ab"
+[email protected].4:
+  version "6.0.4"
+  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.4.tgz#bbf44ccb30fb8314a08f178b62290c669c36d808"
   dependencies:
     nice-try "^1.0.4"
     path-key "^2.0.1"